Originally posted by Ulf Dittmer: Maybe you can post a bit more detail about your setup, and which goals you're trying to achieve.
Maybe "a bit more" wasn't the right way to put it. Tell us as much as you can about your current set up and which goals you're trying to achieve. As Ulf mentioned, if you're using sticky sessions (IP Load Balancing) then there is no need for session replication. And... either way, if you're using sessions, you'll still need to support session cookies unles you've implemented url-rewriting.